An Electrolytic Etch Technique for Aluminum

CIM Bulletin1952

E. C. PEARSON ; G. MARCHAND ; R. H. HAY

A polishing .technique is described together with two anodic etching methods for aluminum ,and its alloys. Some of the optical and structural characteristics of the film formed by these etching methods are discussed and it is shown to what degree these properties of the film are related to the crystallographic orientation of the metallic substrate. Applications to the study of recrystallization and twinning phenomena and to the study of plastic deformation, banding, and texture estimation are discussed. Micrographs are shown .to illustrate the manner in which the technique is particularly well suited to the study of such phenomena.

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